RU207696U1 - A device for making a hole in a pipeline under pressure - Google Patents

Abstract

The utility model relates to pipeline transport of liquids and gases and can be used when connecting branches to an existing pipeline without reducing the pressure in it. The device contains a body, a tool and mechanisms for the axial reciprocating movement of the tool. The tool is made in the form of a barb pointing downwards. The angle at the top of the barb provides a cut through hole in the pipeline under pressure. The mechanism of the axial reciprocating movement of the tool includes a worm shaft with a handle, a gear wheel and a cylindrical body for moving the tool installed in the housing. The tool is fixed with retaining rings installed at the ends of the cylindrical body of the tool movement. The worm shaft is configured to interact with a gear wheel, which interacts with a toothed rack made on the outer surface of the tool axial movement housing. The barb can be made with an extension from the sharp end. Achieved simplicity of design, mobility of the device and the possibility of assembly in the field. 1 wp f-ly, 1 dwg

Description

The utility model was used when connecting branches to an existing pipeline without reducing the pressure in it.

A device for tapping a branch into an existing pipeline is known (patent No. 2170874, IPC F16L 41/08, B23B 41/08, publ. 20.07.2001, bulletin No. 20), containing a branch pipe, a valve, a sealed housing located in with a shaft with a cutting tool and a drive for the rotational movement of the shaft, as well as a mechanism for the reciprocating movement of the shaft, made in the form of screws and nuts, and a centering element, characterized in that the shaft is made composite and contains a main stage and an additional stage attached to it, when At the same time, a cylindrical groove is made on an additional stage, in which an o-ring is installed with the possibility of replacing it with crackers when dismantling the device, and the mechanism for the reciprocating movement of the shaft is equipped with a reaction plate with a central hole of a conical shape, while the centering element has the shape of a cylindrical band made on the inner the surface of the lower part of the nozzle.

The disadvantage of the known device is the complexity of the design and high metal consumption. The presence of additional pipes, which creates inconvenience during operation, especially in the field.

The closest to the proposed device is a device for cutting holes in an operating pipeline (patent No. 58058, IPC F16L 41/04, B23B 41/08 publ. 10.11.2006, bull. No. 31), containing a body, a hollow spindle, a cutting tool, rotation mechanisms and axial displacement of the hollow spindle, characterized in that the cutting tool interacts with the hollow spindle and is made in the form of a cone directed with its apex downward, while the angle at the apex of the cone ensures cutting a through hole in the operating pipeline, and the mechanism for axial displacement of the hollow spindle is made in the form of a pair screw-nut, while the nut is the body, on the inner surface of which the thread is cut, and the screw is the hollow spindle, on the outer surface of which the counter thread is cut, and the rotation mechanism of the hollow spindle is made in the form of a figured sample made on its outer surface above the axial movement, while curly selection has the ability to interact with a special flax tool that allows you to rotate the hollow spindle.

The disadvantage of the known device is limited functionality due to the impossibility of its use in cases of cutting a hole in the wall of the main pipeline in different diameters of the branch pipe.

The technical task of the proposed device is to expand the functionality of the device, increase the efficiency without increasing metal consumption.

The technical problem is solved by a device for making a hole in a pipeline under pressure, consisting of a body in which a tool and a mechanism for the axial reciprocating movement of the tool are installed.

What is new is that the tool is made in the form of a barb with an extension from a sharp end to make a hole in a pipeline of various diameters, an additional housing is installed for axial reciprocating movement of the tool with a toothed rack and retaining rings installed in the housing for fixing the barb at the level of the puncture, the mechanism The reciprocating movement of the shaft is made in the form of a pair of gearwheels with a worm shaft.

The figure shows a general view of the device in section.

A device for making a hole in a pipeline under pressure contains a housing 1 in which a tool 2 and a mechanism for the axial reciprocating movement of tool 2 are installed. Tool 2 interacts with a cylindrical body of axial movement 5 and is made in the form of a cone with an expansion of the diameter at a certain distance pointing downwards. The angle of the taper of the tool 2 provides for cutting a through hole in the pipeline. The cylindrical body of axial movement 5 is made in the form of a hollow cylinder, at the ends of which retaining rings 6 and 6 'are installed, and a toothed rack 7 is located along the length of the body.

The mechanism of the axial reciprocating movement of the tool, which is installed in the body of the device 1 and is necessary for the movement of the tool when puncturing the surface of the pipeline, includes a cylindrical body of axial movement 5, a worm shaft 4 with a handle 8 and a gearwheel 3.

Structural elements and technological connections, which do not affect the operability of the device, are not shown in the drawing or are shown conditionally.

The device works as follows.

First, determine the place where you want to make a hole in the pipeline. The device is mounted on a valve (not shown) using flange connections (not shown). The valve (not shown) is welded externally around the perimeter to the pipeline (not shown) by any known method, for example, using manual arc welding. After that, a valve (not shown) is opened, which allows the tool 2 to be allowed to the surface of the pipeline (not shown). By rotating the handle 8 of the drive shaft of the worm gear 4, the rotational movement of the gear wheel 3 is converted into a translational movement using the gear rack 7. The tapered tip of the tool 2 abuts against the surface of the pipeline (not shown) and mechanically acts on squeezing at the point of contact. Further impact on the surface of the pipeline will result in a puncture of the surface.

To puncture a hole with a larger diameter in the pipeline, it is necessary to fix the tool 2 with the help of locking wheels 6 and 6 'so that the level of the pipeline surface is below the expansion level of the tool 2.

After puncturing the pipeline, the tool 2 is lifted by the reverse rotational movement of the worm shaft 4 using the handle 8, the valve is closed (not shown) and the device is dismantled, if necessary, a sample of liquid and gas transported through the operating pipeline is taken.

The proposed device for making a hole in the pipeline has a simple design, mobile, and allows you to use the device in cases of cutting a hole in the wall of the main pipeline for different diameters of nozzles and to assemble it in the field, which reduces material and financial costs for puncturing holes in the pipeline located under pressure.

Claims (2)

1. A device for making a hole in a pipeline under pressure, comprising a body in which a tool and a mechanism for axial reciprocating movement of the tool are installed, characterized in that the tool is made in the form of a barb directed downward, and the angle at the top of the barb is made with the possibility of providing a through hole in a pipeline under pressure, and the mechanism of axial reciprocating movement of the tool includes a worm shaft with a handle installed in the housing, a gear wheel and a cylindrical body of axial movement of the tool, and the tool is fixed with retaining rings installed at the ends of the cylindrical body axial movement, while the worm shaft is configured to interact with a gear wheel, which interacts with a gear rack made on the outer surface of the cylindrical body for axial movement of the tool. 2. The device according to claim 1, characterized in that the barb is made with an extension from the sharp end.

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